What is the Greatest Common Factor of 9979 and 9985?

Greatest common factor (GCF) of 9979 and 9985 is 1.

GCF(9979,9985) = 1

We will now calculate the prime factors of 9979 and 9985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9979 and 9985.

How to find the GCF of 9979 and 9985?

We will first find the prime factorization of 9979 and 9985. After we will calculate the factors of 9979 and 9985 and find the biggest common factor number .

Step-1: Prime Factorization of 9979

Prime factors of 9979 are 17, 587. Prime factorization of 9979 in exponential form is:

9979 = 17¹ × 587¹

Step-2: Prime Factorization of 9985

Prime factors of 9985 are 5, 1997. Prime factorization of 9985 in exponential form is:

9985 = 5¹ × 1997¹

Step-3: Factors of 9979

List of positive integer factors of 9979 that divides 9979 without a remainder.

1, 17, 587

Step-4: Factors of 9985

List of positive integer factors of 9985 that divides 9979 without a remainder.

1, 5, 1997

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9979 and 9985. The biggest common factor number is the GCF number.
So the greatest common factor 9979 and 9985 is 1.

Also check out the Least Common Multiple of 9979 and 9985